<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_View
 * @subpackage Helper
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: ServerUrl.php 16971 2009-07-22 18:05:45Z mikaelkael $
 */

/**
 * Helper for returning the current server URL (optionally with request URI)
 *
 * @category   Zend
 * @package    Zend_View
 * @subpackage Helper
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_View_Helper_ServerUrl
{
	/**
	 * Scheme
	 *
	 * @var string
	 */
	protected $_scheme;

	/**
	 * Host (including port)
	 *
	 * @var string
	 */
	protected $_host;

	/**
	 * Constructor
	 *
	 * @return void
	 */
	public function __construct()
	{
		if (isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] === true)) {
			$scheme = 'https';
		} else {
			$scheme = 'http';
		}
		$this->setScheme($scheme);

		if (isset($_SERVER['HTTP_HOST']) && !empty($_SERVER['HTTP_HOST'])) {
			$this->setHost($_SERVER['HTTP_HOST']);
		} else if (isset($_SERVER['SERVER_NAME'], $_SERVER['SERVER_PORT'])) {
			$name = $_SERVER['SERVER_NAME'];
			$port = $_SERVER['SERVER_PORT'];

			if (($scheme == 'http' && $port == 80) ||
			($scheme == 'https' && $port == 443)) {
				$this->setHost($name);
			} else {
				$this->setHost($name . ':' . $port);
			}
		}
	}

	/**
	 * View helper entry point:
	 * Returns the current host's URL like http://site.com
	 *
	 * @param  string|boolean $requestUri  [optional] if true, the request URI
	 *                                     found in $_SERVER will be appended
	 *                                     as a path. If a string is given, it
	 *                                     will be appended as a path. Default
	 *                                     is to not append any path.
	 * @return string                      server url
	 */
	public function serverUrl($requestUri = null)
	{
		if ($requestUri === true) {
			$path = $_SERVER['REQUEST_URI'];
		} else if (is_string($requestUri)) {
			$path = $requestUri;
		} else {
			$path = '';
		}

		return $this->getScheme() . '://' . $this->getHost() . $path;
	}

	/**
	 * Returns host
	 *
	 * @return string  host
	 */
	public function getHost()
	{
		return $this->_host;
	}

	/**
	 * Sets host
	 *
	 * @param  string $host                new host
	 * @return Zend_View_Helper_ServerUrl  fluent interface, returns self
	 */
	public function setHost($host)
	{
		$this->_host = $host;
		return $this;
	}

	/**
	 * Returns scheme (typically http or https)
	 *
	 * @return string  scheme (typically http or https)
	 */
	public function getScheme()
	{
		return $this->_scheme;
	}

	/**
	 * Sets scheme (typically http or https)
	 *
	 * @param  string $scheme              new scheme (typically http or https)
	 * @return Zend_View_Helper_ServerUrl  fluent interface, returns self
	 */
	public function setScheme($scheme)
	{
		$this->_scheme = $scheme;
		return $this;
	}
}
